It IS a home server. I DID check.. see my edit to my above post. As I said. I can disable TLER monitoring on the LSI and the Thecus pays no attention to TLER and ECC signals and handles drive timeouts in a more "Home" friendly manner. The fact is though.... you're missing my point. out of 6 drives, 2 of them failed within 3 months of purchase. My other advice was just that... advice... that desktop drives can drop off a RAID. I've never once disagreed with you, or suggested that you were wrong. I knew there was a possibility of TLER issues with desktop drives when I bought them. It's happened a few times... I just click rebuild. Not an issue for me, as I have two servers... one mirroring the other, and both are RAID 5 (one is actually RAID6 now). So data loss is not a concern due to this. Out of all the times they've dropped off the RAID though, the EARS "sleeping" was not the cause. However.. 2 mechanical failures out of 6 drives within 3 months seems excessive to me, and enough to make me consider whether I buy another WD drive.